100000 DolphinsHere’s something you certainly don’t see every day.

Captain Joe Dutra and others aboard his boat were stunned to see about 100,000 dolphins swimming in a span 7 miles long and 5 miles wide off the coast of San Diego on Thursday.

“They were coming from all directions, you could see them from as far as the eye can see,” said Dutra, whose boat followed the dolphins for over an hour.

“I’ve seen a lot of stuff out here…but this is the biggest I’ve ever seen.”

Check it out below.